TG-17(OBAI) - Prospectus(update)

As filed with the Securities and Exchange Commission on January 12, 2026. Registration No. 333-290750 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 Amendment No. 4 REGISTRATION STATEMENT Under The Securities Act of 1933 TG-17, Inc. (Exact name of registrant as specified in its charter) incorporation or organization) Classification Code Number) Identification Number) Nevada 4899 83-1751618 (State or other jurisdiction of (Primary Standard Industrial (I.R.S. Employer 85 Broa ...